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Question on cross-referencing and scoping [message #1016248] Tue, 05 March 2013 16:01 Go to next message
Marco Naddeo is currently offline Marco NaddeoFriend
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Registered: November 2012
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Hi all Smile

I have a question on cross-referencing and scoping: if I declare in my DSL grammar a cross-reference and I do not define a particular scope for it, which is the default one?

If my cross-reference has type T, should I always see all occurences of T in the model, right?
Re: Question on cross-referencing and scoping [message #1016255 is a reply to message #1016248] Tue, 05 March 2013 16:40 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
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Hi

you see all instances of T (inclusive subtypes) in all model files in the project (and referenced ones) if they are exported to the xtext index (= have a name attribute)

~Christian
Re: Question on cross-referencing and scoping [message #1016256 is a reply to message #1016255] Tue, 05 March 2013 16:41 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
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P.S:

And the qualified name has to be serializable at the point

[T] is short for the [T|ID] => a ID will parsed and you wont see thze objects if their name contains a .
Re: Question on cross-referencing and scoping [message #1016422 is a reply to message #1016256] Wed, 06 March 2013 12:06 Go to previous messageGo to next message
Marco Naddeo is currently offline Marco NaddeoFriend
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Registered: November 2012
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Christian Dietrich wrote on Tue, 05 March 2013 11:41
P.S:

And the qualified name has to be serializable at the point

[T] is short for the [T|ID] => a ID will parsed and you wont see thze objects if their name contains a .


I think this is my problem, because on method content assist I only see the methods declared in the same mixin where I'm writing code, and not the others.

And in fact I'm using qualified names:

fragment = exporting.QualifiedNamesFragment {}


However, as in Java editor, on a method call I don't want to refer to the called method using a qualified name as (for example):

ClassName.methodName


but a simple one:

methodName


How can I get this? Rolling Eyes I have to enable the SimpleNamesFragment instead of the QualifiedNamesFragment one?


Thanks in advance,
Marco
Re: Question on cross-referencing and scoping [message #1016444 is a reply to message #1016422] Wed, 06 March 2013 13:29 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
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Did you try [T|FQN]
With FQN : ID ("." ID)*;

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Re: Question on cross-referencing and scoping [message #1016456 is a reply to message #1016444] Wed, 06 March 2013 14:10 Go to previous messageGo to next message
Marco Naddeo is currently offline Marco NaddeoFriend
Messages: 62
Registered: November 2012
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Yes, I tried, in that way I see all methods in content assist drop-down, but I obtain this error message when I generate Xtext Artifacts from grammar:

Decision can match input such as "'.' RULE_ID '.' RULE_ID '.' RULE_ID '.' RULE_ID" using multiple alternatives: 1, 2


that is, my grammar is now ambiguous, right?
Re: Question on cross-referencing and scoping [message #1016461 is a reply to message #1016456] Wed, 06 March 2013 14:44 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 6543
Registered: July 2009
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Yes so you can either fix that use simple name provider or give
explicitly a simple name in the defaultdeclarativenameprovider

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Re: Question on cross-referencing and scoping [message #1016977 is a reply to message #1016255] Fri, 08 March 2013 12:39 Go to previous message
Lorenzo Bettini is currently offline Lorenzo BettiniFriend
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On 03/05/2013 05:40 PM, Christian Dietrich wrote:
> Hi
>
> you see all instances of T (inclusive subtypes) in all model files in
> the project (and referenced ones) if they are exported to the xtext
> index (= have a name attribute)
>
> ~Christian

Sorry if I jump in the discussion:
if there are containment relations the default scoping will take care of
that, won't it? Because of the default qualified name provider which
takes containment relation into account, right?

--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
HOME: http://www.lorenzobettini.it
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