sclass RuleEngine2_MatchedRule {
  S globalID = aGlobalID();
  RuleEngine2.Rule rule;
  SS map;
  new Map<S, Int> mappingQuality; // key in map to -1, 0 or 1
  new LPair<LS> matchedLines;
  S tokenizationFunction;
  LS remainingConditions;
  
  int qualitySum() {
    ret intSum(values(mappingQuality))-l(map);
  }
  
  RuleEngine2.Rule applyMapping() {
    new RuleEngine2.Rule r;
    r.in = map(rule.in, f<S, S> applyMappingTo);
    r.out = applyMappingTo(rule.out);
    ret r;
  }
  
  S appliedRuleText() {
    ret applyMapping().asText();
  }
  
  S applyMappingTo(S s) {
    ret s == null ? null : join(ai_mapCodeTokensWithMap(tokenize(s), map));
  }
  
  LS tokenize(S s) {
    ret (LS) callAndMake(assertNotNull(tokenizationFunction), s);
  }
}