Id QueryExecutor::newDerivedFact()

in glean/rts/query.cpp [270:300]

• 24 lines of code
• 6 McCabe index (conditional complexity)

Id QueryExecutor::newDerivedFact(
    Pid type,
    binary::Output* key,
    size_t keySize) {
  Fact::Clause clause = Fact::Clause::from(key->bytes(), keySize);
  auto id = facts.define(type, clause);

  // If we are going to store this derived fact in the DB, we need to
  // know its ownership set, which is determined by the facts it was
  // derived from.
  if (ownership) {
    std::set<UsetId> owners;

    // The Ids can only be facts that we already have computed owners for.
    for (const auto& iter : iters) {
      if (iter.id != Id::invalid()) {
        auto owner = ownership->getOwner(iter.id);
        if (owner == INVALID_USET) {
          VLOG(1) << "fact " << iter.id.toWord() << " has no owner";
        } else {
          owners.insert(owner);
        }
      }
    }
    if (owners.size() > 0) {
      ownership->derivedFrom(id, owners);
    }
  }

  return id;
};