add_module_alias

# File lib/rdoc/context.rb, line 517
  def add_module_alias from, name, file
    return from if @done_documenting

    to_name = child_name name

    # if we already know this name, don't register an alias:
    # see the metaprogramming in lib/active_support/basic_object.rb,
    # where we already know BasicObject is a class when we find
    # BasicObject = BlankSlate
    return from if @store.find_class_or_module to_name

    to = from.dup
    to.name = name
    to.full_name = nil

    if to.module? then
      @store.modules_hash[to_name] = to
      @modules[name] = to
    else
      @store.classes_hash[to_name] = to
      @classes[name] = to
    end

    # Registers a constant for this alias.  The constant value and comment
    # will be updated later, when the Ruby parser adds the constant
    const = RDoc::Constant.new name, nil, to.comment
    const.record_location file
    const.is_alias_for = from
    add_constant const

    to
  end