class RDoc::Store

def load_cache
  #orig_enc = @encoding
  @cache = marshal_load(cache_path)
  load_enc = @cache[:encoding]
  # TODO this feature will be time-consuming to add:
  # a) Encodings may be incompatible but transcodeable
  # b) Need to warn in the appropriate spots, wherever they may be
  # c) Need to handle cross-cache differences in encodings
  # d) Need to warn when generating into a cache with different encodings
  #
  #if orig_enc and load_enc != orig_enc then
  #  warn "Cached encoding #{load_enc} is incompatible with #{orig_enc}\n" \
  #       "from #{path}/cache.ri" unless
  #    Encoding.compatible? orig_enc, load_enc
  #end
  @encoding = load_enc unless @encoding
  @cache[:pages]                       ||= []
  @cache[:main]                        ||= nil
  @cache[:c_class_variables]           ||= {}
  @cache[:c_singleton_class_variables] ||= {}
  @cache[:c_class_variables].each do |_, map|
    map.each do |variable, name|
      @c_enclosure_names[variable] = name
    end
  end
  @cache
rescue Errno::ENOENT
end