class StackProf::Report

def files
  @data[:files] ||= @data[:frames].inject(Hash.new) do |hash, (addr, frame)|
    if file = frame[:file] and lines = frame[:lines]
      hash[file] ||= Hash.new
      lines.each do |line, weight|
        hash[file][line] = add_lines(hash[file][line], weight)
      end
    end
    hash
  end
end