grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.common.Terminals

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

Model:
	items+= (Entity | Sublist)* ;

FQN: ID ('.' ID)*;

Entity: 
	'entity' name=ID '{'
	attrs+=Attribute*
	'}' 
;

Attribute:  name=ID ';' ;

Sublist:
	'sublist' entity = [Entity|ID] '{'
		(attrs+=[Attribute|FQN] ';')*
	'}' ;

entity EntityA { a;b;c; }
sublist EntityA { EntityA.a; EntityA.b;	}

entity EntityA { a;b;c; }
sublist EntityA { a; b;	}

public class MyDslScopeProvider extends AbstractMyDslScopeProvider {

	@Override
	public IScope getScope(EObject context, EReference ref) {
		
		if (ref == MyDslPackage.Literals.SUBLIST__ATTRS) {
			Sublist sublist=(Sublist) context;			
			return Scopes.scopeFor(sublist.getEntity().getAttrs());
		}
		return super.getScope(context, ref);
	}
}