module RSpec::Core::Metadata::MetadataHash

def store_computed(key)
  case key
  when :location
    store(:location, location)
  when :file_path, :line_number
    file_path, line_number = file_and_line_number
    store(:file_path, file_path)
    store(:line_number, line_number)
  when :execution_result
    store(:execution_result, {})
  when :describes, :described_class
    klass = described_class
    store(:described_class, klass)
    # TODO (2011-11-07 DC) deprecate :describes as a key
    store(:describes, klass)
  when :full_description
    store(:full_description, full_description)
  when :description
    store(:description, build_description_from(*self[:description_args]))
  when :description_args
    store(:description_args, [])
  end
end