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Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067727]

Wed, 10 July 2013 06:14

Eclipse User

Hi,

In a grammar using org.eclipse.xtext.xbase.Xbase, I redefine JvmParameterizedTypeReference as following:

JvmParameterizedTypeReference:
type=[JvmType|QualifiedName] (=>'[' arguments+=JvmArgumentTypeReference (',' arguments+=JvmArgumentTypeReference)* ']')?;

In order to change how are specified type parameters in JvmTypeReference.

When I do that, content assist stops working for references...

Is there something I should override for it to work?

Thanks

Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067795 is a reply to message #1067727]

Wed, 10 July 2013 11:36

Eclipse User

Hi how do your imports look like?

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Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067797 is a reply to message #1067795]

Wed, 10 July 2013 11:43

Eclipse User

My imports are classical, since they are not using type references, I'm using the XImportSection, and it works well actually.

I think I may have found a reason for why content assist does not work: the generated AbstractProposalProvider contains methods that override those that were redefined in XbaseProposalProvider concerning completeJvmParameterizedTypeReference_Type!
If I re-override it with the content of the method from XbaseProposalProvider, content assist work but in a slightly different way than if I didn't had redefined JvmParameterizedTypeReference.

For example when completing String, the proposal contains first some inner class starting with String (in classes not starting with String), then the classes starting with String...

Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067798 is a reply to message #1067797]

Wed, 10 July 2013 11:44

Eclipse User

Or you meant in my grammar?

Like that:
grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.xbase.Xbase

generate myDsl "http://www.xtext.org/example/mydsl/MyDsl"

import "http://www.eclipse.org/xtext/common/JavaVMTypes"

Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067803 is a reply to message #1067798]

Wed, 10 July 2013 11:55

Eclipse User

Yes I meant this will have a look later in the evening

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Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067811 is a reply to message #1067803]

Wed, 10 July 2013 12:39

Eclipse User

Hi,

hi i am not sure what proposals you are missing.
a simple look at the proposalprovider would have shown that magic in the xbaseproposalprovider is hidden.
(completeJvmParameterizedTypeReference_Type)

so you have to copy and paste

override void completeJvmParameterizedTypeReference_Type(EObject model, Assignment assignment,
			ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
		if (getXbaseCrossReferenceProposalCreator().isShowTypeProposals() || getXbaseCrossReferenceProposalCreator().isShowSmartProposals()) {
			completeJavaTypes(context, TypesPackage.Literals.JVM_PARAMETERIZED_TYPE_REFERENCE__TYPE, acceptor);
		}
	}

for [] you may have to customize isKeywordWorthyToPropose too

i am not sure if this is a bug or not.

Re: Content Assist for JvmTypeReference stops working when redefining its syntax [message #1067996 is a reply to message #1067811]

Thu, 11 July 2013 11:28

Eclipse User

Hi, thanks for your answer, and the solution you propose is the one I talked about in my previous answer Wink

I'm wondering if it is a bug that by default it gets hidden...

For the [ ], the only thing I had to be careful of is to disable support for arrays as they use the same characters (but I don't need them so it's ok).
Now is that good idea to have started using []? Maybe not Smile

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