module ActionDispatch module Journey # :nodoc: module NFA # :nodoc: module Dot # :nodoc: 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.flat_map { |k, memos| # (memos || []).map { |v| " #{k} -> #{v.object_id};" } #}.uniq <<-eodot digraph nfa { rankdir=LR; node [shape = doublecircle]; #{accepting_states.join ' '}; node [shape = circle]; #{edges.join "\n"} } eodot end end end end end