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[SOLVED]Problem with Xtend keywords [message #1369628]

Tue, 20 May 2014 17:22

Alexander R

Messages: 211
Registered: July 2013

Senior Member

Hello,

I am using a Xtext-Typesystem-API (https://code.google.com/a/eclipselabs.org/p/xtext-typesystem/) which provides me the following operaton:

 typeof(EObject obj, TypeCalculationTrace trace);

I want to use this operation in my : MydslValidator.xtend - class, but it is not possible because Xtend reserve this operationname as a keyword.

Is there a possibility to use this operation without wrapping it in an own Javaclass?

~Alex

[Updated on: Wed, 21 May 2014 09:04]

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Re: Problem with Xtend keywords [message #1369654 is a reply to message #1369628]

Tue, 20 May 2014 17:38

Christian Dietrich

Messages: 13512
Registered: July 2009

Senior Member

Hi does it work to escape with ^keyword

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Re: Problem with Xtend keywords [message #1369718 is a reply to message #1369654]

Tue, 20 May 2014 18:11

Alexander R

Messages: 211
Registered: July 2013

Senior Member

Hi,
you made my day (or better night..)!!

Thank you! Is it maybe possible to define more than one validator? maybe one in Xtend and another one in Java?
I read something about it here: http://blog.dietmar-stoll.de/2013/04/multiple-validators-in-xtext.html but I'm not sure, that I can combine Java and Xtend validators.

~Alex

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Re: Problem with Xtend keywords [message #1369812 is a reply to message #1369718]

Tue, 20 May 2014 19:05

Christian Dietrich

Messages: 13512
Registered: July 2009

Senior Member

you can add subvalidators using the annotation @ComposedChecks on the main validator class

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Re: Problem with Xtend keywords [message #1369813 is a reply to message #1369812]

Tue, 20 May 2014 19:06

Christian Dietrich

Messages: 13512
Registered: July 2009

Senior Member

it does not play a role if they are written in java or in xtend

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Re: Problem with Xtend keywords [message #1371153 is a reply to message #1369628]

Wed, 21 May 2014 08:39

Alexander R

Messages: 211
Registered: July 2013

Senior Member

Hi,

I'm a litte bit confused, cause it didn't work out for me. I'm doing the following steps:

1. Adding a composedCheck in my XTEND-MyDslValidator:

@ComposedChecks (validators = { CustomValidator.class })
class MyDslValidator extends AbstractCdalfValidator{
..
}

2. Create a Javaclass in the same validation package that looks like this:

public class CustomValidator extends AbstractDeclarativeValidator{

}

Do I have to register the CustomValidator.class also in the xtext runtime module or maybe in the .mwe2 file?
I also getting the following error in the Xtend-Validator-class:

The value for an annotation attribute must be a constant expression

Thanks!

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