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Overriding default validator of one particular reference object [message #1800835]

Tue, 08 January 2019 21:20

Martin Moser

Messages: 18
Registered: January 2019

Junior Member

Hi all,

I have implemented a DSL to replace our test-cases which have been described in Excel so far.
My DSL also contains references to other elements like:

StepCall returns Expression:
{StepCall } 'call' calledstep=[StepName] '(' (arguments+=ParamValue (',' arguments+=ParamValue)*)? ')'
;

We have also a launch configuration which can deal with the new DSL and the old Excel stuff in order to run the tests.
Because of that I need a mixture for that call syntax in my DSL editor.
A call of StepCall can either point to an existing StepName from the DSL or to a string representing an Excel file.

With the rule above I get a validation error if there is no StepName defined inside my DSL language.

My question is, how can I override that default check for references to check for a StepName or an existing Excel file. I know how to implement additional checks but I want to replace the default checks in my case.

Is there a better way than overriding the validation?
Could I apply the rule to either be a call or a string?

Thanks in advance!

Best regards,
Martin

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Re: Overriding default validator of one particular reference object [message #1800837 is a reply to message #1800835]

Tue, 08 January 2019 21:22

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Which particular check do you mean? Could not resolve reference to?
That is done by ilinkingdiagnosticmessageprovider
Should work to return null there

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

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Re: Overriding default validator of one particular reference object [message #1800838 is a reply to message #1800837]

Tue, 08 January 2019 21:23

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

P.s. if your excel files are kinda formal you might consider to introduce a iresourceservice provider
And fake emf resource for xls so that you can actually reference into the excel file

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

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Re: Overriding default validator of one particular reference object [message #1800863 is a reply to message #1800838]

Wed, 09 January 2019 08:49

Martin Moser

Messages: 18
Registered: January 2019

Junior Member

Hi Christian,

thank you very much for that fast replay.

Implementing a ILinkingDiagnosticMessageProvider worked like a charm.
The IResourceServiceProvider idea sounds interesting, I will try that later. At the moment the solution above does the job.

Best regards,
Martin

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