add_class_or_module

# File lib/rdoc/context.rb, line 308
  def add_class_or_module(collection, class_type, name, superclass = nil)
    full_name = child_name name

    mod = collection[name]

    if mod then
      mod.superclass = superclass unless mod.module?
    else
      all = if class_type == RDoc::NormalModule then
              RDoc::TopLevel.modules_hash
            else
              RDoc::TopLevel.classes_hash
            end

      mod = all[full_name]

      unless mod then
        mod = class_type.new name, superclass
      else
        # If the class has been encountered already, check that its
        # superclass has been set (it may not have been, depending on the
        # context in which it was encountered).
        if class_type == RDoc::NormalClass then
          mod.superclass = superclass unless mod.superclass
        end
      end

      unless @done_documenting then
        all[full_name] = mod
        collection[name] = mod
      end

      mod.section = @current_section
      mod.parent = self
    end

    mod
  end