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[SOLVED] Porting project from xtext plugin to xtext lsp server [message #1826982]

Tue, 05 May 2020 16:18

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

Hi guys, I've got an xtext project that atm is builded and used as Eclipse plugin.
Hearing that xtext supports language server protocol I would like to try and use it.
Unfortunately, as per the docs, i need to build the project using Gradle and to enable gradle I need to create an xtext project without the "Plugin functionalities"

Here is my question: "Since the project is huge is there some official way, I don't know, maybe an export and import" to duplicate the project but using gradle and removing all "eclipse plugin" related code?

Thanks.

[Updated on: Wed, 06 May 2020 14:23]

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Re: Porting project from xtext plugin to xtext lsp server [message #1827005 is a reply to message #1826982]

Wed, 06 May 2020 05:57

Christian Dietrich

Messages: 13641
Registered: July 2009

Senior Member

Hi, you don't have to use gradle.
You just need to make sure you export the .ide part in a way that you have something you can start.
AFAIK this is in the wizard if you select,language server and eclipse

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Re: Porting project from xtext plugin to xtext lsp server [message #1827017 is a reply to message #1827005]

Wed, 06 May 2020 07:57

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

Hello, there is no such option in the export menu.
Is there any documentation reference where I can find how to do this procedure?

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Re: Porting project from xtext plugin to xtext lsp server [message #1827021 is a reply to message #1827017]

Wed, 06 May 2020 08:27

Tamas Miklossy

Messages: 114
Registered: February 2016

Senior Member

Try to use this combination

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Re: Porting project from xtext plugin to xtext lsp server [message #1827023 is a reply to message #1827021]

Wed, 06 May 2020 08:39

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

The only way I know to reach that window is by recreating the whole project and manually reimporting everything.
Is there a faster way to reach it from an already created project?

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Re: Porting project from xtext plugin to xtext lsp server [message #1827027 is a reply to message #1826982]

Wed, 06 May 2020 09:08

Karsten Thoms

Messages: 739
Registered: July 2009
Location: Dortmund, Germany

Senior Member

That's already the fastest way to come to a working project. To be faster, hire experts to help you.

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Re: Porting project from xtext plugin to xtext lsp server [message #1827030 is a reply to message #1827027]

Wed, 06 May 2020 09:20

Christian Dietrich

Messages: 13641
Registered: July 2009

Senior Member

istill dont get your goal:

(a) ditch and eclipse and move to lsp
(b) make the eclipse stuff also LSP capable

what is your goal

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

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Re: Porting project from xtext plugin to xtext lsp server [message #1827031 is a reply to message #1827027]

Wed, 06 May 2020 09:21

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

The project already exists and this is for a graduation thesis, I've got no budget for an expert on eclipse just to modify settings of an old project.
Anyway if this is the best way i'll try it, thanks

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Re: Porting project from xtext plugin to xtext lsp server [message #1827033 is a reply to message #1827030]

Wed, 06 May 2020 09:37

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

- I've got this project using xtext and xtend to parse a simple DSL
- I want to give users the ability to use their own preferred IDE
- I've read about LSP and it should be possible to make the already existing xtext part of my project as a language-server
- I'm trying to follow the guide https://www.typefox.io/blog/building-a-vs-code-extension-with-xtext-and-the-language-server-protocol but it only covers the creation of a new project. Indeed this new project needs to be created with different parameters
- I'm thereby asking if anyone knows the best way to port the old project to work with this feature without having to recreate a whole project from scratch.

thanks for your time

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Re: Porting project from xtext plugin to xtext lsp server [message #1827037 is a reply to message #1827033]

Wed, 06 May 2020 11:09

Christian Dietrich

Messages: 13641
Registered: July 2009

Senior Member

assuming you dont care about CI & already have a .ide project

- add a new launch config to ide calling the org.eclipse.xtext.ide.server.ServerLauncher
- launch the config and add missing dependencies to manifest until no errors
- use the export -> java -> runnable jar file
to get a runnable jar.

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

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Re: Porting project from xtext plugin to xtext lsp server [message #1827064 is a reply to message #1827037]

Wed, 06 May 2020 14:22

Luca Reccia

Messages: 14
Registered: May 2020

Junior Member

Thanks for all your support, after a few hours of strugle I managed to make it work. Here are the steps i followed for some future reference:

as christian has anticipated I didn't have any CI or complex maven setup I cared about

- create an xtext project with the same name and workspace as the old one (there will be some copy and paste and this will make it easier)
- select "eclipse plugin option" if you need it
- select Gradle as build system
- select normal as "language server"
- select "web" if needed and click finish
- move all the /src/* of all the old project (in my case the root one, 'ide', 'target', 'tests', 'ui', 'web') in the respective src folders of the new project
- do "run as mwe2 workflow" on the file "rootporject"/"YourGrammar".mwe2
- (OPTIONAL) add ` applicationName = 'xtext-server' ` the row beneath "mainClassName" inside "rootproject".ide/build.gradle
- open terminal inside the project and run "gradle installDist"
- "rootproject".ide/build/install/xtext-server/bin/xtext-server is your language server, you can call it from an ide plugin frontend (further reference on how to do this for VSCODE https://www.typefox.io/blog/building-a-vs-code-extension-with-xtext-and-the-language-server-protocol)

Thanks for all your help

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