Class: ActionDispatch::Journey::GTG::Simulator

Inherits:
Object
  • Object
show all
Defined in:
actionpack/lib/action_dispatch/journey/gtg/simulator.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transition_table) ⇒ Simulator


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# File 'actionpack/lib/action_dispatch/journey/gtg/simulator.rb', line 17

def initialize(transition_table)
  @tt = transition_table
end

Instance Attribute Details

#ttObject (readonly)

Returns the value of attribute tt


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# File 'actionpack/lib/action_dispatch/journey/gtg/simulator.rb', line 15

def tt
  @tt
end

Instance Method Details

#simulate(string) ⇒ Object Also known as: =~, match


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# File 'actionpack/lib/action_dispatch/journey/gtg/simulator.rb', line 21

def simulate(string)
  input = StringScanner.new(string)
  state = [0]
  while sym = input.scan(%r([/.?]|[^/.?]+))
    state = tt.move(state, sym)
  end

  acceptance_states = state.find_all { |s|
    tt.accepting? s
  }

  return if acceptance_states.empty?

  memos = acceptance_states.map { |x| tt.memo(x) }.flatten.compact

  MatchData.new(memos)
end