class Bundler::Index

def local_search(query)
  case query
  when Gem::Specification, RemoteSpecification, LazySpecification, EndpointSpecification then search_by_spec(query)
  when String then specs_by_name(query)
  when Array then specs_by_name_and_version(*query)
  else
    raise "You can't search for a #{query.inspect}."
  end
end