class Dry::Schema::Path

def self.[](spec)
  case spec
  when Symbol, Array
    new(Array[*spec])
  when String
    new(spec.split(DOT).map(&:to_sym))
  when Hash
    new(keys_from_hash(spec))
  when Path
    spec
  else
    raise ArgumentError, '+spec+ must be either a Symbol, Array, Hash or a Path'
  end
end