public override Completion CreateImmutableBinding(string name, bool strict)
{
if (bindings.ContainsKey(name))
{
throw new InvalidOperationException("Spec 8.1.1.1.3 step 2");
}
bindings.Add(name, BindingRecord.Immutable(strict: strict));
return(Completion.NormalCompletion());
}
public override Completion CreateMutableBinding(string name, bool deletable)
{
if (bindings.ContainsKey(name))
{
throw new InvalidOperationException("Spec 8.1.1.1.2 step 2");
}
bindings.Add(name, BindingRecord.Mutable(canDelete: deletable));
return(Completion.NormalCompletion());
}