func doAssignment(rift *lang.Rift, env collections.PersistentMap, assignment *lang.Assignment) interface{} {
// TODO: Should I use lazy assignment here?
var name string
if rift.Name() == "main" {
name = assignment.Ref().String()
} else {
name = rift.Name() + ":" + assignment.Ref().String()
}
env.Set(name, evaluate(rift, env, assignment.Value()))
return nil
}
func dereference(rift *lang.Rift, env collections.PersistentMap, ref *lang.Ref) interface{} {
// TODO: Support gravity
sanity.Ensure(env.Contains(ref.String()), "Undefined reference to [%s]", ref.String())
return env.GetOrNil(ref.String())
}