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Extending a DSL with Plugins [message #1383449]

Mon, 26 May 2014 11:15

Oliver Ilnicki

Messages: 4
Registered: May 2014

Junior Member

Hello there, I am new to Xtext so I hope it will be easy to solve this question.

I have created a DSL and I want to enhance it with the use of Plugins.

How can I implement Plugins for my DSL? How can the Plugins acces variables of my DSL?

For exampel I have the following DSL:

Model:
greetings+=Objects*;

Objects:
Project|Content|Flow
;

Project:
'Contentlist:' conelement+=Content+
'Flowlist:' flowelements+=Flow+
;
Content:
'content' name=ID
;
Flow:
'Flow from ' source=[Content] 'to' target=[Content]
;

I have created language artifacts and launched a runtime Eclipse.

there I wrote the following code:
Contentlist:
content storageA
content StorageB

Flowlist:
Flow from storageA to StorageB

Now I want to create a Plugin, which checks in the runtime eclipse if a Flow in the "Flowliste" has the same source and target.

How can I do that?

Looking Forward to an aswer, kind Regards
OI

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Re: Extending a DSL with Plugins [message #1383779 is a reply to message #1383449]

Mon, 26 May 2014 14:39

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Why a Plugin?

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Extending a DSL with Plugins [message #1383843 is a reply to message #1383779]

Mon, 26 May 2014 15:12

Oliver Ilnicki

Messages: 4
Registered: May 2014

Junior Member

It doesn't need to be a Plugin excactly (a friend advised me to use them).

It is important that different developers should be able to create 'extensions' and/or new features for the DSL independently from each other.

Is there maybe a better way than plugins? What does the DSL need to be easily extended?

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Re: Extending a DSL with Plugins [message #1383877 is a reply to message #1383843]

Mon, 26 May 2014 15:51

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi there is no easy way doing this. Validation might not be a Problem
but for other aspects ...

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Extending a DSL with Plugins [message #1383883 is a reply to message #1383449]

Mon, 26 May 2014 16:48

Oliver Ilnicki

Messages: 4
Registered: May 2014

Junior Member

ok, if I limit myself to validation, how would I do it?
Is there a step by step tutorial?

For exampel can the DSL check if source and destination of a flow are the same object?

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