public override Binder VisitCharacteristic(CharacteristicNode node)
{
var next = DefaultVisit(node);
var profileSymbol = GetProfileSymbol(node.FirstAncestorOrSelf <ProfileNode>() !, next)
?? throw new InvalidOperationException("Profile symbol required.");
return(new CharacteristicBinder(next, profileSymbol));
}
internal ICharacteristicTypeSymbol BindCharacteristicTypeSymbol(CharacteristicNode node, DiagnosticBag diagnostics) =>
BindSimple <ICharacteristicTypeSymbol, ErrorSymbols.ErrorCharacteristicTypeSymbol>(
node, diagnostics, node.TypeId, LookupOptions.CharacteristicTypeOnly);
