transition_table

# File actionpack/lib/action_dispatch/journey/gtg/builder.rb, line 17
        def transition_table
          dtrans   = TransitionTable.new
          marked   = {}
          state_id = Hash.new { |h, k| h[k] = h.length }

          start   = firstpos(root)
          dstates = [start]
          until dstates.empty?
            s = dstates.shift
            next if marked[s]
            marked[s] = true # mark s

            s.group_by { |state| symbol(state) }.each do |sym, ps|
              u = ps.flat_map { |l| followpos(l) }
              next if u.empty?

              if u.uniq == [DUMMY]
                from = state_id[s]
                to   = state_id[Object.new]
                dtrans[from, to] = sym

                dtrans.add_accepting(to)
                ps.each { |state| dtrans.add_memo(to, state.memo) }
              else
                dtrans[state_id[s], state_id[u]] = sym

                if u.include?(DUMMY)
                  to = state_id[u]

                  accepting = ps.find_all { |l| followpos(l).include?(DUMMY) }

                  accepting.each { |accepting_state|
                    dtrans.add_memo(to, accepting_state.memo)
                  }

                  dtrans.add_accepting(state_id[u])
                end
              end

              dstates << u
            end
          end

          dtrans
        end