Flowdock
method

transition_table

Importance_0
v6.1.7.7 - Show latest stable - 0 notes - Class: Builder
transition_table() public

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# File actionpack/lib/action_dispatch/journey/gtg/builder.rb, line 19
        def transition_table
          dtrans   = TransitionTable.new
          marked   = {}.compare_by_identity
          state_id = Hash.new { |h, k| h[k] = h.length }.compare_by_identity
          dstates  = [firstpos(root)]

          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?

              from = state_id[s]

              if u.all? { |pos| pos == DUMMY }
                to = state_id[Object.new]
                dtrans[from, to] = sym
                dtrans.add_accepting(to)

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

                if u.include?(DUMMY)
                  ps.each do |state|
                    if @followpos[state].include?(DUMMY)
                      dtrans.add_memo(to, state.memo)
                    end
                  end

                  dtrans.add_accepting(to)
                end
              end

              dstates << u
            end
          end

          dtrans
        end
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