52 lines
1.1 KiB
Ruby
52 lines
1.1 KiB
Ruby
module Imbecile
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class FA
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class State
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attr_accessor :accepts
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attr_reader :transitions
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def initialize
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@transitions = []
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end
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def add_transition(code_point_range, destination)
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@transitions << Transition.new(code_point_range, destination)
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end
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# Determine the set of states that can be reached by nil transitions.
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# from this state.
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#
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# @return [Set<NFA::State>]
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# Set of states.
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def nil_transition_states
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states = Set[self]
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analyze_state = lambda do |state|
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state.nil_transitions.each do |transition|
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unless states.include?(transition.destination)
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states << transition.destination
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analyze_state[transition.destination]
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end
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end
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end
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analyze_state[self]
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states
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end
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def nil_transitions
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@transitions.select do |transition|
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transition.nil?
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end
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end
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def cp_transitions
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@transitions.reject do |transition|
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transition.nil?
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end
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end
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end
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end
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end
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