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Home » Modeling » TMF (Xtext) » Hover support and data type rules(Hover doesn't seem to work on non-string data type rules)

Hover support and data type rules [message #1071127]

Fri, 19 July 2013 08:00

Eclipse User

Hello,

I'm currently working on my first DSL, and I wanted to add some hover support. It works nicely, but it doesn't seem to work on data type rules.

Here's an example that doesn't work (even with a value converter for "SignedInt"):

SignedInt returns ecore::EInt:
    '-'? INT
;

SomeRule:
    'Something' name = SignedInt
;

And here's something that works:

SignedInt:
    '-'? INT
;

SomeRule:
    'Something' name = SignedInt
;

However, having an ecore::EString data type rule works (hover supported). Is it intended, or am I doing something wrong?

Re: Hover support and data type rules [message #1071135 is a reply to message #1071127]

Fri, 19 July 2013 08:17

Eclipse User

Hi,

you may debug into org.eclipse.xtext.ui.editor.hover.html.DefaultEObjectHoverProvider.hasHover(EObject)
so see what is your problem

Re: Hover support and data type rules [message #1072165 is a reply to message #1071135]

Mon, 22 July 2013 04:05

Eclipse User

Thank you for your answer Christian, it helped me find the problem, which was linked to my QualifiedNameProvider. I'm still not sure why it didn't work with data type rules, but it's now fixed.

Re: Hover support and data type rules [message #1072384 is a reply to message #1072165]

Mon, 22 July 2013 12:43

Eclipse User

Hi the default nameprovider looks for an attribute named 'name' of
type String which will not be found if the type is int

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