sclass LineCompFullCached > LineCompSemiCached {
  LS literals;

  *(File f) {
    LineCompReader reader = init(f);
    literalOffsets = null;
    literals = reader.literals;
  }
  
  int nLiterals() { ret l(literals); }
  
  S getLiteral(int i) {
    ret literals.get(i);
  }
}