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Help with scoping [message #722406]

Mon, 05 September 2011 17:04

Rafael Angarita

Messages: 94
Registered: November 2010

Member

Hello,

I have something like this in my grammar:


ObjectReference:
		type=[VariableType]
;


VariableType:
	Attribute | Domain | ExtendedDataType
;

The problem is that the objects Attribute and Domain are explicitly written by the user, while the object ExtendedDataType is an implicit object of my DSL.

My first thought was to simply write a scoping method like this:

public IScope scope_VariableType(EObject context, EReference reference) {

		
        //get the list of my implicit objects
	Interface i = ElementFactory.getFactory().getInterfaceByName("ExtendedDataTypes");
	return Scopes.scopeFor(i.getExtendedDataTypes());
}

, but it will only show the ExtendedDataType objects and not the Attribute and Domain objects written by the user.

What approach I can use here to show all the objects I need?

Thanks!

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Re: Help with scoping [message #722412 is a reply to message #722406]

Mon, 05 September 2011 17:35

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

just a technical solution: see org.eclipse.xtext.scoping.Scopes.scopeFor(Iterable<? extends EObject>, IScope)
and call delegategetscope for the out scope

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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