grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.xbase.Xbase

import "http://www.eclipse.org/xtext/common/JavaVMTypes" as types

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

Model:
	ref=JvmTypeReference "::" op=[types::JvmOperation];

public class MyDslScopeProvider extends XbaseScopeProvider {

	public IScope getScope(org.eclipse.emf.ecore.EObject context, EReference reference) {
		if (reference == MyDslPackage.Literals.MODEL__OP && context instanceof Model) {
			return scope_Model_op((Model) context, reference);
		}
		return super.getScope(context, reference);
	};

	IScope scope_Model_op(Model ctx, EReference ref) {
		if (ctx.getRef().getType() instanceof JvmDeclaredType) {
			Iterable<JvmOperation> declaredOperations = ((JvmDeclaredType)ctx.getRef().getType()).getDeclaredOperations();
			return Scopes.scopeFor(declaredOperations,
					
					new Function<JvmOperation, QualifiedName>() {
					public QualifiedName apply(JvmOperation op) {
						return QualifiedName.create(op.getSimpleName());
					}
				
					}, IScope.NULLSCOPE);
		}
		return IScope.NULLSCOPE;
	}
	
}