sclass LineCompReader {
  new LS literals;
  new LPair<Int> pairs;
  new LinkedHashMap<S, L<Int>> versions;
  
  *(Reader reader) ctex {
    S s = reader.readLine();
    new Matches m;
    if (startsWith(s, "LINECOMP ", m)) fail("Not a LINECOMP file");
    int nLiterals = parseInt(m.rest());
    for i to nLiterals:
      literals.add(assertNotNull(reader.readLine()));
    while licensed {
      s = reader.readLine();
      if (s == null || contains(s, "=")) break;
      pairs.add(assertNotNull(listToPair(parseInts(splitAtSpace(s)))));
    }
    while (contains(s, "=")) {
      int i = indexOf(s, '=');
      versions.put(takeFirst(s, i), parseInts(splitAtSpace(substring(s, i+1))));
      s = reader.readLine();
    }
  }
}