Class: ArtDecomp::Decomposer

Inherits:
Object
  • Object
show all
Defined in:
lib/art-decomp/decomposer.rb

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ Decomposer

Returns a new instance of Decomposer.



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# File 'lib/art-decomp/decomposer.rb', line 3

def initialize params
  @archs   = params[:archs]
  @fsm     = params[:fsm]
  @uv_gens = params[:uv_gens].map &:new
  @qu_gens = params[:qu_gens].map &:new
  @qv_gens = params[:qv_gens].map &:new
end

Instance Method Details

#decompositions(opts = {}) ⇒ Object 



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# File 'lib/art-decomp/decomposer.rb', line 11

def decompositions opts = {}
  @seen = Set[]
  Enumerator.new do |yielder|
    @uv_gens.each do |uv_gen|
      uv_gen.uv_pairs(@fsm, @archs).each do |fsm, u, v|
        unless @seen.include? [fsm, u, v]
          @qu_gens.each do |qu_gen|
            qu_gen.blankets(fsm, u, v).each do |qu|
              unless @seen.include? [fsm, u, v, qu]
                @qv_gens.each do |qv_gen|
                  qv_gen.blankets(fsm, u, v, qu).each do |qv, g|
                    unless @seen.include? [fsm, u, v, qu, qv, g]
                      dec = Decomposition.new fsm, u, v, qu, qv, g
                      if dec.sensible? @archs
                        if opts[:non_disjoint]
                          non_disjoint(fsm, u, v, qu, qv, g, opts).each do |ndj|
                            yielder.yield ndj
                          end
                        end
                        yielder.yield dec
                      end
                      @seen << [fsm, u, v, qu, qv, g] unless opts[:keep_seen]
                    end
                  end
                end
                @seen << [fsm, u, v, qu] unless opts[:keep_seen]
              end
            end
          end
          @seen << [fsm, u, v] unless opts[:keep_seen]
        end
      end
    end
  end
end