module Music
module Transcription
module Parsing

grammar Meter
  include PositiveInteger
  
  rule meter
    meter1 / meter2
  end
  
  rule meter1
    bpm:positive_integer "/" bd:positive_integer {
      def to_meter
        Music::Transcription::Meter.new(bpm.to_i, Rational(1,bd.to_i))
      end
    }
  end
  
  rule meter2
    bpm:positive_integer "*" num:positive_integer "/" den:positive_integer {
      def to_meter
        Music::Transcription::Meter.new(bpm.to_i, Rational(num.to_i,den.to_i))
      end
    }
  end
end

end
end
end