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sclass PullbackToProfitAnalysisBase {
  settable double pullbackLimit = 1.0;
  settable double adversity = 0.2;
  settable boolean isShort;
  settable TickerSequence ticker;
  settable long startTime;
  settable L<PullbackToProfit> ptpList;
  settable double openingPrice;
  
  double priceToProfit(double price) {
    var profit = asPercentIncrease(price, openingPrice());
    if (isShort()) profit = neg(profit);
    ret profit-adversity();
  }
  
  run {
    if (notNull(ptpList())) ret;
    if (startTime == 0) startTime = ticker().startTime();
    var idx1 = ticker().indexOfTimestamp(startTime());
    openingPrice(ticker().getPrice(idx1));
    var crest = 0.0; //negativeInfinity
    var maxPullback = 0.0;
      
    ptpList = new L;
    
    var it = countIterator(idx1, ticker().size());
    while (hasNext(it)) {
      var idx = it.next();
      var price = ticker().getPrice(idx);
      var time = ticker().getTimestamp(idx);
      var profit = priceToProfit(price);
            
      crest = max(crest, profit);
      var pullback = crest-profit;
      maxPullback = max(maxPullback, pullback);
      
      if (maxPullback >= pullbackLimit()) {
        printConcat("Ending at pullback ", maxPullback, " (", formatMinutes(time-startTime()), ")");
        break;
      }
          
      var result = new PullbackToProfit().startTime(startTime()).pullback(maxPullback).profit(crest-maxPullback).timestamp(time);
      if (nempty(ptpList())) {
        var prev = last(ptpList());
        if (prev.replaces(result))
          result = null;
        else if (result.replaces(prev))
          popLast(ptpList());
      }
      addIfNotNull(ptpList(), result);
    }
  }
  
  double maxCleanness() {
    run();
    ret doubleMax(map(ptpList(), ptp -> ptp.cleanness());
  }
  
  PullbackToProfit cleanestPTP() {
    run();
    ret highestBy(ptpList(), ptp -> ptp.cleanness());
  }
}