Methods

Journey::NFA::Dot

Public Instance Methods

to_dot() click to toggle source
# File lib/journey/nfa/dot.rb, line 5
def to_dot
  edges = transitions.map { |from, sym, to|
    "  #{from} -> #{to} [label=\"#{sym || 'ε'}\"];"
  }

  #memo_nodes = memos.values.flatten.map { |n|
  #  label = n
  #  if Journey::Route === n
  #    label = "#{n.verb.source} #{n.path.spec}"
  #  end
  #  "  #{n.object_id} [label=\"#{label}\", shape=box];"
  #}
  #memo_edges = memos.map { |k, memos|
  #  (memos || []).map { |v| "  #{k} -> #{v.object_id};" }
  #}.flatten.uniq

  digraph nfa {  rankdir=LR;  node [shape = doublecircle];  #{accepting_states.join ' '};  node [shape = circle];#{edges.join "\n"}}
end

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