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Replacement for TypeReferences.isInstanceof() [message #1402093]

Wed, 16 July 2014 14:01

Csaba Koncz

Messages: 49
Registered: July 2009

Member

Hi,

After upgrading from Xtext 2.4 to 2.6 we noticed that the method
org.eclipse.xtext.common.types.util.TypeReferences.isInstanceOf(JvmTypeReference, Class<?>)
has been removed.

We used this method to validate the JvmType references of our model (whether they implement certain interfaces).

What is the recommended way to do this kind of validation with Xtext 2.6?
I checked LightweightTypeReference.isSubtypeOf() but I had the impression that the environments in which this method is used are rather connected with Xbase.
Our grammar is not based on Xbase.

Thank you in advance,
Csaba

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Re: Replacement for TypeReferences.isInstanceof() [message #1402146 is a reply to message #1402093]

Wed, 16 July 2014 15:33

Christian Dietrich

Messages: 13614
Registered: July 2009

Senior Member

did you try org.eclipse.xtext.common.types.util.TypeReferences.is(JvmTypeReference, Class<?>)

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Re: Replacement for TypeReferences.isInstanceof() [message #1402550 is a reply to message #1402146]

Thu, 17 July 2014 06:29

Csaba Koncz

Messages: 49
Registered: July 2009

Member

Hi Christian,

I did not try the "is" method, only looked at its implementation and from that it seems that it only checks qualified name equality. The implementation of the old "isInstanceOf" walked the superclass hierarchy and invoked "is" to find a match.

I also checked the commit that introduced the change to find out what is used now instead of the removed method (https://git.eclipse.org/r/#/c/21954/9), but could not find an Xbase-free usage.

Csaba

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