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DeclarativeScopeProvider as delegate [message #1837072]

Thu, 21 January 2021 15:26

Olaf Bigalk

Messages: 155
Registered: July 2009
Location: Berlin

Senior Member

I have implemented my own ScopeProvider for my grammar.
But somehow I am not able to integrate it streamlining with the stubs generated be Xtext

The stub is GeneratorModelScopeProvider(package omitted)
it is an AbstractGeneratorModelScopeProvider which in turn is an
DelegatingScopeProvider.

During debugging I recognized that the ScopeProvider is instantiated over and over again. Which surprise me. because I thought this instance could be reused for the whole runtime.

I suffered some NullPointerExeptions because one delegate in the generated stub does not get set as it should be.

I guess I only need to Guice annotate my ScopeProvider in the right way and the problem is solved.

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Re: DeclarativeScopeProvider as delegate [message #1837073 is a reply to message #1837072]

Thu, 21 January 2021 15:28

Christian Dietrich

Messages: 14026
Registered: July 2009

Senior Member

which delegate do you mean and what are you doing

the normal delegating scopeprovider is bound by
public void configureIScopeProviderDelegate(Binder binder) {
binder.bind(IScopeProvider.class).annotatedWith(Names.named(AbstractDeclarativeScopeProvider.NAMED_DELEGATE)).to(ImportedNamespaceAwareLocalScopeProvider.class);
}

in AbstractMyDslRuntimeModule

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[Updated on: Thu, 21 January 2021 15:29]

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