module Enumerable
module Kleene
module Kleene::DSL
class Kleene::BatchMatchTracker
class Kleene::BatchMultiMatchDFA
class Kleene::DFA
class Kleene::DFATransition
class Kleene::Error
class Kleene::MachineTuple
class Kleene::MatchRef
class Kleene::MultiMatchDFA
class Kleene::NFA
class Kleene::NFATransition
class Kleene::NaiveOnlineRegex
class Kleene::OnlineDFA
class Kleene::OnlineMatch
class Kleene::OnlineMatchTracker
class Kleene::Parser
class Kleene::State
class String
kleene
0.10.0
# error_states
def error_states @states.select(&:error?).to_set end